12 Buildings Constructed Using Techniques Historians Still Study
Several ancient and early buildings were constructed with techniques so advanced that modern historians and engineers still study how they were achieved.
Ancient engineering
20 Technologies Lost to Natural Disasters
Here's a look at real tools, innovations, and engineering methods that vanished when natural disasters wiped out the cultures that created them.
12 Temples Aligned With Celestial Events
Here's a look at 12 ancient temples where the builders aligned them with the movements of the sun, moon, and stars.
12 Artifacts Made With Technology Beyond Their Time
This collection walks through twelve pieces that keep both archaeologists and casual history fans intrigued.
15 Forgotten Materials That Could Change Modern Engineering
These 15 materials, used or discovered in the past, could inspire breakthroughs in modern engineering if their properties are fully understood and applied.
18 Forgotten Inventions That Were Ahead of Their Time
These inventions were smart, creative, and way ahead of when people were ready for them.